115. Print Binary Representation of an 8-bit or 16-bit Value

#include <stdio.h>
#include <stdint.h>

void print_binary(uint16_t val) {
    int i = (val <= 0xff) ? 8 : 16;
    do {
        uint16_t bit = val & (1 << (i - 1));
        printf("%c", bit ? '1' : '0');
    } while (--i);
}

int main() {
    uint16_t val;
    scanf("%hu", &val);
    print_binary(val);
    return 0;
}